本文实例为大家分享了PHP查询操作实现投票功能的代码,供大家参考,具体内容如下
题目:
解题方法汇总:
方法一:
1. 投票主页面:<form action="TouChuLi.PHP" method="post">
<?php
include ("DBDA.class.php");
$db=new DBDA();
//从调研题目表中找出题目代号和名称
$sql="select from diaoyantimu limit 0,1";
$arr=$db->query($sql);
$tmmc=$arr[0][1];
$tmdh=$arr[0][0];
echo "{$tmmc}:
//从调研选项表中输出选项内容:
$sqlxx="select from diaoyanxuanxiang where timudaihao='{$tmdh}'";
$arrxx=$db->query($sqlxx);
echo "
foreach ($arrxx as $v)
{
echo "
";
}
?>
<input type="submit" value="提交">
<input type="button" value="查看结果" id="check" onclick="Showjieguo()">
<div id="jieguo" style="display:none">
<?php
//计算总人数:
$sqlzs="select sum(numbers) from diaoyanxuanxiang where timudaihao='{$tmdh}'";
$zrs=$db->query($sqlzs);
foreach ($arrxx as $v)
{
$name=$v[1];
$number=$v[2];
if($zrs[0][0]==0)
{
$bfb = 0;
}
else
{
$bfb = ($number/$zrs[0][0])*100;
}
$bfb=round($bfb,2);
echo "
{$name}
"; } ?> @H_502_61@
2.处理投票页面:
{
$sql = "update diaoyanxuanxiang set numbers = numbers+1 where ids = '{$v}'";
$db->Query($sql,1);//1代表$sql的类型
}
header ("location:TouPiao.PHP");
?>
3. 建立访问数据库的类,封装用于引用:
}
方法二:
1. 投票主页面:
<form action="TouChuLi.PHP" method="post">
<?php
include ("../DBDA.class.php");
$db=new DBDA();
//从调研题目表中找出题目代号和名称
$sql="select from diaoyantimu limit 0,1";
$arr=$db->query($sql);
$tmmc=$arr[0][1];
$tmdh=$arr[0][0];
echo "{$tmmc}:
//从调研选项表中输出选项内容:
$sqlxx="select from diaoyanxuanxiang where timudaihao='{$tmdh}'";
$arrxx=$db->query($sqlxx);
echo "
foreach ($arrxx as $v)
{
echo "
";
}
?>
<input type="submit" value="提交">
<a href="ChaKan.php">
2. 处理投票页面:
{
$sql = "update diaoyanxuanxiang set numbers = numbers+1 where ids = '{$v}'";
$db->Query($sql,1);//1代表$sql的类型
}
header ("location:TouPiao.PHP");
?>
3. 查看投票结果页面:
<?php
include ("../DBDA.class.php");
$db=new DBDA();
//从调研题目表中找出题目代号和名称
$sql="select from diaoyantimu limit 0,1";
$arr=$db->query($sql);
$tmmc=$arr[0][1];
echo "{$tmmc}:
//从调研选项表中输出选项内容:
$sqlxx="select from diaoyanxuanxiang where timudaihao='{$arr[0][0]}'";
$arrxx=$db->query($sqlxx);
//计算总人数:
$sqlzs="select sum(numbers) from diaoyanxuanxiang where timudaihao='{$arr[0][0]}'";
$zrs=$db->query($sqlzs);
foreach ($arrxx as $v)
{
$name=$v[1];//调研项目名称
$number=$v[2];//选择该项的人数
//判断总人数是否为0
if($zrs[0][0]==0)
{
$bfb = 0;
}
else
{
$bfb = ($number/$zrs[0][0])*100;//求百分比
}
$bfb=round($bfb,2); //取小数点后两位
echo "
{$name}
"; } ?>
PHP"> @H_502_61@
显示结果: